class Fish{
   int weight=1;
}
class Lake {
   Fish fish;
   void setFish(Fish s){ 
     fish= s;
  }
void foodFish (int m){ 
   fish.weight=fish.weight+m;
  }
}
public class E {
   public static void main (String args []) {
      Fish redFish = new Fish () ;
      System.out.println (redFish.weight) ;
      Lake lake = new Lake () ;
      lake.setFish (redFish) ;
      lake.foodFish (120) ;
      System.out.println(redFish.weight) ;
      System.out.println(lake.fish.weight) ;
   }
}